Conveyer.



PATENTED AUG. 11, 1903.

0-735,921, E. J. WEBSTER.

CON VEYE-B..

APPLIOATION FILED SEPT. 1s. 1897.

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No MODELL PATENTED'AUG'. 11, 1903.

A. J. WEBSTER.

GONVEYBR. A

APPLICATION FILED SEPT. 18, 1897.

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No. 735,921. ,PATENTED `AUG.11,1903.

A. J. WEBSTER..

' ,colwlasml i APPLICATION FILED SEPT. 18, 1897.

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No. 735,921. Y InATEN'JPD AUG. 11, 19o's.l

' A. J. WEBSTER.-

GONVEYER.

APPLICATION lILBD SEPT. 18,1897. N0 MODEL. u 4 SHEETS-SHEET 4.

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ATENT OFFICE..

ALFRED J. WEBSTER, OF COLUMBUS, OHIO, ASSIGNOR TO. JOSEPH A. JEFFREY, OF COLUMBUS, OHIO.

i CONVEYER.

SPECIFXQATION forming part of `Letters Patent N o. 735,921, dated August 11, 1903.

Application led September 18,1897. Serial No. 652.174. (No model.)

To all whom it may concern:

Be it known that I, ALFRED J. WEBSTER, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and 'useful Improvements in Oonveyers; and lido declare the following to be a full, clear, and eX- act description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference beinghad to theaccompanying drawings, and to the letters of reference marked thereon, which form a part of this speciication.

Figure 1 is a side elevation of a sufficient portion of a conveying apparatus to illustrate one manner of embodying my improvements.-

Fig. 2 isa top plan View, on an enlarged scale, of a portion of the conveyer. Fig. 3 is a side elevation illustrating the dumping mechanism. Fig. 4 is a side view of a diagrammatic character, j showing the di'erent positions taken by one ofthe buckets during the oper ation of. dumping. Fig. 5 is a plan view of a portion of the conveyer-chain. Fig. 6 is a side elevation of the same. Figs. 7 and 8 are detailed views. Figs. 9 and 10 are respectively a plan and side elevation of a portion of the loading-conveyer. Fig. 11 is a transverse sectional view of the conveyer. Fig. l2 is a detail of one of the bucket-links. Fig. 13 is a plan view ofone of the connectingpintles for the chain and the enlarged Wear ing-cylinder or bushing which is combined therewith, the adjacent parts of the chain.

being represented by dotted lines.

For the purpose of clearly illustrating one of the uses to which may be put the several features of my invention I have shown in the dra wings,somewhatconventionallyand somewhat in detail, an endless conveyor adapted to receive coal from a point on the outside of a building and carry it to bins or receptacles in or adjacent to a boiler-room or from the pit or receptacle below the boiler room, where they are received; but it will be understood that the several parts, `more or less, of the invention can be used in mechanisms for other purposes and of modified construction.

Inthe apparatus shown use is made of two parallel chains, each indicated as a whole by A. Each is shown as supported upon a series The chains illustrated are each of a peculiar form whichl have devised. It is made up of sets of links, each setcomprising a rollerlink B, a bucket-link B', and two connectinglinks B2. l Y side bars b, connected at the ends by tubular or sleeve-like extensions b', integral with the side bars.` great strength and havefthe side bars b separated or spaced in such a way as to receive a roller C between them, the roller being mounted upon a pin or journal c.

The bucket-links B" aresolid bars or plates, each having the tubular end portions b2 and being provided with atransverse passage or aperture b3 and a laterally-projecting'tubular boss E on its outer face or side in line with said aperture b3. The intermediate or connecting links of the set are formed of iiat the roller-links B and the bucket-links Bi'. In

. the chains thus constructed are mounted'the lugs E', which are fastened to the bucket byv rivets. F is a shaft or rod extending across the bucket and having its ends passed through the said sleeves E2, said sleeves and shaft being suitabl y connected together, and the ends of the latter are shaped to provide journals, which are mounted in bearings formed by the aforesaid apertures?)3 in the bucket-links and The roller-link B is formed of two These links B are forgings of.

the aforesaid projecting bosses E on said links.

. of the chain-lin ks and the Width of the bucket are so related that the latter shall be approximately close together edge to edge; but, unlike some bucket carriers heretofore constructed, in the present case the chain-links are so arranged that on the draft side or uprun the buckets can be separated slightly, while on the slack side or downrun they will naturally tend to approach each other, as shown in Fig. l. Hence at the point of loading, which is on the slack side, the edges of the buckets will be close together, so as to obvate the spilling of material delivered to them, and at the place of dumping they will be slightly separated, so as'to insure sufficient clearness or free space to permit them to be tilted readily. -This capability of the conveyer is facilitated by the form of chain emlployed and the manner of connecting the chains with the buckets. It will be observed that the bucket or load carrying links are pivotedto or connected with links which are intermediate the links that carry the supporting-rollers which run upon the ways or tracks Q. It follows that when the chain is slack, as on the lower run of the conveyer when the parts are arranged as shown in Fig. l, the buckets and the portion of the chain to which they are directly connected may sag a little between each pair of supports formed by opposite bearing-rollers C, with the result that the edges of the buckets come close together, as stated.

Gr indicates a hopper adapted to receive and temporarily contain coal or other like material. From this hopper there leads a chute g. The lower end of this chute is so arranged as to deliver material continuously, if desired, to a series of buckets H. These are arranged in series and are each connected to and carried by a chain I. In this case each chain-link is composed of two longitudinallyextending bars 2', which are securely riveted or otherwise secured to the upper portions of the sides of one of the buckets and extend or project beyond the side Walls thereof. The projecting ends of the bars t are connected by a transverse shaft i', and on the end portions of said shafts beyond the buckets H are mounted rollers i2, adapted to engage with the teeth of the sprockets J. (See Figs. 1 and 9.) The driving-shaft J is geared, preferably, bya chain J2 to one of the shafts of the main chain-as, for instance, to the shafts alg-and the diameter and speeds of the driving mechanism are such that the buckets H shall travel with the same speed as the buckets D when moving parallel to them. Each bucket H has a bottom h, preferably inclined, 'a front wall h,'end walls h2, and an open top and an open side or discharge-mouth opposite the front wall. This open side of each bucket is closed when the bucket is loaded by a closing device h3, carried by the following bucket of the series.

series, and, preferably, there is a strip at h4 to insure tightness at the bottom; but as eachvbucket reaches the forward end of its horizontal movement and begins to pass upwardly around the sprocket J at that point the bucket is moved away from the closing device h3 and the contents of the bucket allowed to escape.

When the apparatus is in operation,the material that is delivered by the chute g passes into the buckets H one after another, while they are moving along their lower run, the open sides of the bucket being at this time upward. After each bucket H has been loaded and passes beyond the chute and begins to rise around the wheel J the contents thereof are delivered, as above described, to the bucket D, which is traveling below. When the empty bucket H is descending around the other wheel J, its open end is closed in the way described. `In this way I can form suitably-sized charges or loads from the continuous' stream of material delivered by the chute g and empty successively and without spilling them into the buckets D. The latter after being filled travel onward around the wheels a2 a3 a4 a5 to the place forthe dumping at L.

The dumping is effected as follows: Upon the iiooring or framework of the building or the structure wherein the carrier is placed there are supported tripping devices, (indicated as a whole by M.) Each trip comprises two members, one indicated by m and the other by m', the first being adapted to impart a gradual but firm tilting ofthe bucket around itsl axis at the lrod or shaft F, or at least cause it to commence such tilting, and the latter (the member at m) being adapted to continue the tilting movement and to hold the bucket with firmness and steadiness in the dumping position.

The parts at m consist of an arm or bar fn, rocking on an axis at 'n' and having at the end a trip arm n2, which is preferably curved or inclined somewhat in the direction of travel of the buckets and terminating in a hooklike extension n3. Preferably there is one of these arms n on each side of the carrier, and they are connected together rigidly by the rock-shaft at n. Each bucket is at or near its bottom` provided with an outwardly-extending trip-arm o, which may be provided by fastening a rod to the under side of the bucket and allowing its extremities to project beyond it. These are so arranged as to impinge upon the trip-arms n2. The other member ofthe tripping mechanism at m consists of a lug or projection n4, stationarily fastened to the framework, and with it there can engage a lug o', secured to the bucket near its upper edge. Here also there is duplication of these parts n4 and 0-that is to say, there is one of each at each end of the ICO IIO

. and immediately the bucket begins to tilt.

As soon as draft is exerted by the buckets upon the trip-arms n n2 the latter begin nto rise around their axis at n', and the'parts are so related that the tilting continues rapidly, but without shocks or jars; but there is manifestly a limit to the eciency of the triparms n n2, as they cannot swing above a certain line without interfering with the following bucket. Just as soon as the bucket reaches the farthest position to which it can be carried by these parts at n n2 the lug at o comes in contact with the lug at n4, and as this engagement occurs at a relatively low line the lugs can exert a quick and powerful leverage upon the bucket and throw it far enough over to instantly discharge its load and at the same time throw it out of engagement with the arms at n n2. moves along ajlittle farther `the lug at o escapes frorn that at n4, and being now empty the bucket swings back into its normal position.

In some conveying mechanisms. it is desirable to be able to deliver the material for a while at one place and then at another. In such case the memberm of the tripping mechanism is arranged so that it can be adjusted into or out of working position. I have shown devices `for this purpose. At P P there are cam-like supports for the arms n. These are secured to the shaft p, which is mounted at 4o p. Upon the shaft there is a worm-wheelp,

` aperture.

with which engages a worm P2. The shaft P3 of the latter extends down to the floor or to some other suitable place accessible to the operator. By the hand-wheel P4 he can rotate the worm-Wheel p and throw the cam-like rests or supports P up or down, so as to carry the arms nzinto or out of their operative positions. Vhen` they are down, they are out of the paths of the trip-pins 0 and the buckets pass them without tilting.

` The horizontal parts of the conveyor move along tracks Q, upon which fit the rollers C, and these support the load,so that it can move without friction. The roller-links B and the solid links B' are joined to the connectinglinks by means of pintles bb' and bushings or Wearing-sleeves 67. Each pintle h6 is oval or flattened and is of such shape as to be readily drop-forged, and therefore made hard, tough,

and durable. Each side strap-bar h5 is pro-` vided at each end lwith a corresponding oval orelongated aperture, and the bushings are each formed with a central similarly-shaped This construction is superior to those heretofore employed. The flattening of the pintle securely locks it against rotation in the side bars b5 and also locks the As the bucket' bushing or sleeve 117 from rotation.` The pintle has heretofore been locked againstrota- `tion in the outer side bars by means of webs or pins, the main part of the pin being cylindrical in section, and the sleeve has been locked by forming a rabbet or shoulder at each end and fitting the rabbeted or shouldered part into a corresponding aperture in the side bar; but by forging the pintle in the shape shown I obviate the necessity of these expensive features of the pintle and thelabor incident to shaping and fasteningthe bushings or sleeves in the way described. The sleeve or ,bushing 127 being cylindrical on its exterior surface yprovides a large Wearingface at the place of articulation withan adjacent link. As represented in Figs. 5 6, and

13 of the drawings, the pintle and the wear-- ing sleeve or {cylinder 117 when assembled in working relations with the other parts of the links operate together as one part-thatis to say, the wearing sleeve or cylinder partakes of the rotary movements .of the pintle as .though it were integral therewith, the sleeve and pintle turning withothe side bars of the link B2 and in the end bearings of the nextadjacent link. The parts of the chain at the joints or articula-tions are secured together by means of the heads bs at the ends of the pintles h6, these heads being formed by upsetting or riveting the ends of the pintles and arranged outside of the side bars b5. beunderstood that in case the rollers C are omitted, as inlighter conveyers, a linklike that at B can be substituted for that at B, in which case the means for joining the links together can still be thel same as those above described.

, Buckets, flights, Scrapers, and other material-transporting devices attached at the side of a chain produce violentstrains and distorting actions which tend not only to rapidly wear but to break the articulating devices. When these material-transportingdevices are connected together by links articulated to each other, as are those herein shown and described, thesedifculties incident to conveyers are obviated, as those links of the chain which may be considered as `jour- It will IOO IIO

nal-links have relatively enlarged journal devices in the `wearing-cylinders 217, which are litted in correspondinglydlarge and strong bearings in what may be called the bearing-links, and there is therefore compensa- IZO tion for the lateral strainsand distortions and the chains are properly held in straight lines notwithstanding the displacing tendency of the buckets or other carriers, and thisis enhanced by having these journal-cylinders 197 locked tightly to the journal-links B2 through the means of the liattened pintle` ends be;

frequently used for transporting ashes, coal-` dust, and other material having gritty particles, the articulating devices described are of importance, as the line materialis con! stantly being spilled in the path of the chain,

In conveyers of this sort, which are j and whenthe ordinary pintles or connections 'are used the cutting and wearing at the surfaces of the pintles are serious; but with the present devices the trouble is largely obviated, because the iiattened end parts of the pintles prevent wear in the apertures in the side bars of the links B2, and the large wearing-cylinders 67 have so great a wearing-surface that the cutting and abrading become immaterial.

It will be seen that the chain is formed of 'elements each comprising a load-carrying or bucket link, a wheel or roller link with the centrally-disposed Wheel, and two bar-links, one bar-link being articulated to each end of the wheel or roller link and the load-link being articulated to one of the said bar-links, and by this arrangement I am enabled to build up a chain such as is required for conveyer uses largely of steel parts, as the barlinks, pintles, and wearing-cylinders may be of steel, while the load-carrying links and the Wheel or roller links may be formed of castings or forgings of a size sufficient to insure the requisite strength and of a length less than that of the bar-links.

l. The combination,with the series of buckets, of the chain at each side of the buckets, each chain being formed of sets of links, each set comprising the solid bucket-link, B', the roller-link, B, having side bars, b, and end sleeves, b', integral with the side bars, b, and two connecting strap-links; the pivot or hinge rod for the bucket journaled in two opposite bucket-links, B', and the roller mounted centrally of the chain in the said roller-link, substantially as set forth.

2'. The combination with a conveyer pro vided with swinging buckets, of the dumping mechanism having the initially-actin g, swinging, trip-bar,adapted to engage with the buckets successively to start their tilting action, anda stationary tripper adapted to engage with each bucket and continue said tilting action, substantially as set forth.

3. The combination with the endless conveyer having swinging buckets, of the dumping mechanism having an upwardly-movable trip-arm pivoted at a line below the buckets and arranged to engage with the bottom part of the bucket and to move upward with said bottom, and a stationary trip adapted to engage with the upper part of the bucket, after it has been turned downward, substantially as set forth. 4. The combination with the conveyor having the swinging buckets, of the dumping mechanism having the upward-moving triparm, n2, with a projection, n3, adapted to engage with the bottom part of a bucket, the stationary trip, n4, and the lug or projection, o', at the upper part of the bucket adapted to engage with the stationary trip, substantially as set forth.

5. The combination with the conveyor having a series of buckets secured thereto, of the loading mechanism having a series of buckets, each with a permanently-closed bottom and an open side, means on each bucket for closing the open side of the preceding bucket when loaded, means for advancing the loading-buckets with substantially the same speed as the conveyer, and a chute for delivering material continuously to the loading-buckets; substantially as set forth.

6. In a conveyer, the herein described chain, having links connected by means of the oval or flattened pintles, the bushings or wearing-sleeves provided with oval or flattened apertures for said pintles, and the sleeves, b', fitted to the said bushings, 57, substantially as set forth.

7. In a conveyer, the herein described chain, having the solid links, B,with enlarged apertures at the ends, and thelinks, B2, each formed of a side strap-ba r, b5, with the bushings, or wearing-sleeves, b7, at the ends, and the oval or iiattened pintles passing through oval or iiattened apertures in the side strapbars and in the bushings, said bushings being seated in the end sleeves or apertures of the adjacent links, substantially as set forth.

8. In a conveyor the chain having draftlinks, and one or more solid, forged wheelsupporting links, each wheel-supporting link being formed with side bars, b, and end sleeves or bearings, b', integral with the side bars, b, and the side bars having perforations to receive a wheel-pintle, and an open space between them to receive a wheel; substantially as set forth. v

9. The combination with an endless conveyer provided with carrying-buckets, of an vendless loading-conveyer arranged above a substantially horizontal run of the said endless conveyer and provided with buckets adapted to transport material without dropping it for the desired distance and having closing bottoms and sides, and means for opening the said buckets of the loading-conveyer to discharge their loads directly into the buckets of the carrying-conveyer, substantially as set forth.

10. The combination of the endless conveyer having freely-swinging buckets, the endless loading-conveye'r formed of chains and bucketsrigidly secured thereto and having closing bottoms and sides, and arranged to receive material on their lower run, and means for opening the said rigid buckets as they begin to rise to deliver their contents to the swinging bucket, substantially as set forth.

l1. The combination of the endless conveyer having freely-swinging buckets, the endless conveyer arranged above a substantially horizontal run of the aforesaid conveyer, and having buckets and chains secured rigidly together, each of the last said buckets having a closing bottom and an open side normally closed by the wall of the adjacent bucket, means for initially delivering material to the lower run of the loading-buck- IOO IIO

ets, and means, for opening the lower buckets as they begin to rise, substantially as set forth. y'

12. In a conveyer the combination with a series of material-transporting devices,of the Vchain connected therewith, said chain having connecting-pintles with attened end parts` fitting similarly-shaped apertures inthe journal-links, and theI enlarged wearing-cylinders-each wearing-cylinder being between the flattened ends of a pintle and rigid there` with againstrotation thereon-fitted in the circular bearing-apertures in the said bearing-links, substantially as set forth.

14. In a conveyer, the herein-described chain comprising links with enlarged cylindrical bearings initheir ends, and intermediate links adapted to be connected thereto havingl side bars with substantially oval-shaped apertures in their end portions, the enlarged wearing-cylinders fitted in the said enlarged cylindrical bearings, and a' flattened pintle projecting from each end of-each wearingcylinder and fitted in said oval apertures, substantially as set forth.

15. In a `conveyer, the herein-described ate strap-bar links with non-cylindrical apertures in their end portions, the connectingpintles uniting the said links having ilattened end portions fitting the apertures in the said having end portions litting the said substantiallyV oval apertures and enlarged heads arranged outside of the end portions of the pintles and of the sid-e bars of the links, and enlarged wearing-cylinders carried rby the pintles and turning therewith and fitting in the said enlarged bearings in the links, substantially as set forth.

17. In a conveyer, the combination of a pair of parallel chains comprisinglinks which are provided with supporting-wheels, tracks upon which the said wheels can travel, intermediate links normally unsupported by said tracks which unite 'the wheel-carrying links,

and the buckets or receptacles supported by the last said intermediate links, substantially as set forth. l

18. In a conveyer, the herein-described chain comprising articulated links and supporting wheels or rollers arranged in the vertical longitudinal plane of the chain, and each mounted on an axis whichis transverse relatively to the chain and is situated longitudinallybetween adjacent axes of articulation` of the chain, substantially as set forth.

19. `In a conveyer, the herein -described chain formed of articulated links, the supporting wheels or rollers arranged in the vertical longitudinal plane of the chain on axes other than the axes of articulation of the chain, and detachable Awheel-supports independent of the link-articulating devices, sbstantially as set forth.

20. In a conveyer, the herein -deser-ibe chain comprising load.- carrying links and wheel or roller carryinglinks, with the wheels or rollers arranged in the longitudinal line ofr the chain, the said wheel-carrying links being intermediate the load-carrying links, substantially as set forth.

2l. In a` conveyer, the herein described chain comprising load-carrying'links, wheelcarrying links formed with wheel-chambers in the central longitudinal line of the chain, and strap-bar links connecting a wheel-carrying link and two adjacent load-carrying links, substantially as set forth. e e l 22. In a conveyer, the herein -described chain comprising load-carryinglinks, the wheel-carrying links, and the intermediate connectinglinks havin-g side bars b5, the wheel-links each having a widened wheelspace with side bars in the lines of the side bars b5, and narrowed connecti-ng parts b between the side bars b5, and the supportingwheels in the said widened wheel-spaces, substantially as set forth. v

23. In a conveyer, the herein described chain comprising load-carrying links, wheel- `carrying links formed with j widened wheelchambers arranged centrally of the chain, wheels mounted in the saidcharnbers, barlinks each having the side bars b5, enlarged wearing-cylinders fitting bearings in the loadlinks and in the wheel-links, and flattened pintles locked to the bar-links and rigid with the` said wearing-cylinders against rotation relative thereto, substantially as set forth.

24. In a conveyer, the combination with material-transporting devices, of two parallel chains, each `chain being composed of elements, and each element comprising aloadlink, a wheel-link with a centrally-disposed wheel, and two bar-links, one bar-link `being articulated to each end of the wheel-link, and the load-link being articulated to one of the said bar-links, substantially as set forth.`

25. In a conveyer, the combination with swinging buckets and means for moving them, of a bucket-tilting device mounted. upon a part of the structure that is stationary rela- IIO tive to the moving parts of the con-veyorand which is movable with the bucket While tilting the same, substantially as set forth.

26. In a conveyer, the combination with swinging buckets and means for moving them, of a tilting device arranged in the path of the buckets and movable toward the bucket while in the act of tilting it, substantially as set forth.

27. In a conveyer, the combination with a swinging bucket and a moving chain to which the bucketv is connected, the tilting device having a bucket-engaging part which is movable toward the chain during the act of tilting the bucket, substantially as set forth.

28. In a conveyor, the combination with a chain and the tilting buckets connected therewith, of a movable tilting device for the buckets mounted upon a part of the structure that is'fztationary relative to the moving parts of N'wthe conveyor and is arranged to move in the direction of travel of a bucket while tilting it, substantially as set forth.

29. In a conveyer, the combination with a chain and tilting buckets connected therewith, of a movable tilting device arranged to move with the buckets and to be disengaged vtherefrom after tilting them, and means for holding a bucket in the tilted position after the tilting device is disengaged therefrom, substantially as set forth.

30. The combination with a conveyor provided with an endless supporting-chain and swinging buckets, of a tilting mechanism for.

the buckets having a pivoted arm arranged adjacent to the path of the buckets, with its free end movable toward the supporting-chain and also in the direction in which the buckets are moving, and adapted to engage with.

5o position and at the same time tilt the bucket,

and means for further tilting the bucket so as to release the said-arm and permit it to automatically return to normal position, substantially as set forth.

32. The combination with an endless conveyor provided with carrying-receptacles, of an endless loading-conveyor arranged adjacent to the first said conveyer, and comprising a pair of endless parallel chains, recepta- 6o` cles or buckets for receiving, retaining and transporting material delivered to them connected with the said chains, each receptacle being arranged, when in working position, below the horizontal plane of the chains which support it, and having independent sides, means for connecting the said independent sides of each receptacle with diderent links whereby they move toward and from each other as the chains are defiected from straight lines, and means for deiiecting the chains for causing a discharge of the receptacles, substantially as set forth.

33. The combination with an endless conveyor having receptacles for transporting material, of a loading-conveyor for filling the receptacles of the first-named conveyor and comprising a pair of parallel chains, receptacles for receiving, retaining and transporting material delivered to them, each receptacle having opposite sides connected respectively with different links of the chains whereby as the chains are deflected the said sides will be caused to move toward or from each other, means for holding the said independent sides of the receptacles in normal positions to'close the receptacles, and means for deflecting the chains tocause a separation of the sides of the receptacles to permit them to discharge their contents, substantially as set forth.

34. The combination with an endless conveyer provided with buckets or receptacles for transporting material, of a loading-conveyor comprising a pair of endless chains, buckets or receptacles carried by said chains and arranged to receive, retain and transport material delivered to them, each receptacle having independent opposite sides con- -nected with independent links of the chains of the loading-conveyer, and connections between the receptacles and the chains arranged at points intermediate the articulations of the links, and means for deliecting the chains of the loading-conveyor to cause a separation of the sides ofthe receptacles, and the discharge of the contents thereof, substantially as set forth.

35. The combination of the swinging buckets, the conveyor-chains at the sides of the buckets, each chain comprising solid bucketlinks having central bearings, longitudinallyextending arms and end bearings in the arms, and connecting-links uniting the said bucketlinks, bucket-journals mounted in the bucketlinks, and means for supporting the said chains, substantially as set forth.

436. In a conveyer, the combination with a series of material-transporting devices, of a chain for moving such devices comprising links having side bars, and enlarged removable wearing-cylinders connected with the side bars so as to turn therewith, other links having bearings arranged to fit the said wearing-cylinders and to articulatethereupon, and pintles uniting the said links, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

ALFRED J. WEBSTER.

Witnesses:

JNO. J. REILLY, A. D. SHAW.

IIO 

